STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net loss	$ (4,751,000)	$ (4,803,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Reserve for doubtful accounts	197,000	53,000
Inventory reserve	945,000	281,000
Depreciation and amortization	351,000	373,000
Loss on asset disposal		49,000
Loss on asset impairment	68,000
Loss on litigation settlement		41,000
Stock option expense	169,000	282,000
Accounts receivable	240,000	173,000
Inventory and supplies	231,000	(867,000)
Prepaid expenses and other current assets	94,000	175,000
Long term receivables	6,000	19,000
Accounts payable	(121,000)	(1,448,000)
Deferred revenues	(302,000)	29,000
Accrued payroll and related expense	(163,000)	(387,000)
Other accrued liabilities	(112,000)	(1,250,000)
Accrued interest payable	61,000	61,000
Net cash used in operating activities	(3,087,000)	(7,219,000)
Cash flows from investing activities:
Purchases of property and equipment	(16,000)	(237,000)
Net cash used in investing activities	(16,000)	(237,000)
Cash flows from financing activities:
Payment on notes payable	(17,000)	(20,000)
Net proceeds from the exercise of stock options		23,000
Net proceeds from the issuance of common stock	132,000
Net cash provided by (used in) financing activities	115,000	3,000
Net (decrease) in cash and cash equivalents	(2,988,000)	(7,453,000)
Cash and cash equivalents, beginning of period	3,096,000	8,431,000
Cash and cash equivalents, end of period	108,000	978,000
Supplemental disclosure of cash flow information:
Interest paid	4,000	5,000
Assets acquired through financing arrangements		25,000
Supplemental disclosure of non cash investing and financing:
Shares issued for services	$ 62,000